Bifora 934 SI

 
Bifora 934 SI

Bifora 934 SI

Description

The Bifora caliber 934 SI is a direct relative of the Caliber 934, with the difference, that it uses a direct driven decentral seconds indication at position “6” and uses only seven rubies.

This movement is probably a more modern one, since it uses a screw-less balance.

The construction is rather simple but well made with a rocking bar winding mechanism below the dial and an inhouse Bishock shock protection system.

Bifora 934 SI dial side

Bifora 934 SI dial side

Technical data

Manufacturer:Bifora
Caliber:934 SI
Number of jewels:7
Escapement:Pallet lever
Balance types: Nickel anular balance
Shock protection(s): Bidlingmaier (Bifora)
Balance bearing / direction hairspring:Clockwise
Moveable stud:no
Adjust mechanism:Hairspring key
Construction:
  • lever
  • escape wheel, seconds wheel, third wheel, center minute wheel
  • mainspring barrel
Construction type:pillar construction
Winding mechanism:rocking bar winding system
Setting lever spring:4 hole(s)
Features:s
Functions:hour, minute, decentral second
A/h:18000
Size:9 3/4'''
Production period:1946 - 1958
Literature: Flume: 1958 b.35

Usage gallery

Bifora TOP ladies' watch

Bifora TOP ladies' watch